/** Updates the contour data my directly copying values. */
void updateDirect(GridData griddata) {
if (griddata == null) {
return;
}
if (autoscaleZ) {
double[] minmax = griddata.getZRange(ampIndex);
zmax = minmax[1];
zmin = minmax[0];
if (zMap != null) {
zMap.setMinMax(zmin, zmax);
}
colorMap.setScale(zmin, zmax);
}
if (griddata instanceof ArrayData) {
double[][] arrayData = griddata.getData()[ampIndex];
for (int i = 0; i < nx; i++) { // copy the rows
System.arraycopy(arrayData[i], 0, internalData[i], 0, ny);
if (zMap != null) {
for (int j = 0; j < ny; j++) {
internalData[i][j] = zMap.evaluate(internalData[i][j]);
}
}
}
} else if (griddata instanceof GridPointData) {
double[][][] ptdata = griddata.getData();
for (int i = 0, nx = ptdata.length; i < nx; i++) {
for (int j = 0, ny = ptdata[0].length; j < ny; j++) {
internalData[i][j] = ptdata[i][j][2 + ampIndex];
if (zMap != null) {
internalData[i][j] = zMap.evaluate(internalData[i][j]);
}
}
}
}
}
/**
* Expands the z scale so as to enhance values close to zero.
*
* @param expanded boolean
* @param expansionFactor double
*/
public void setExpandedZ(boolean expanded, double expansionFactor) {
if (expanded && (expansionFactor > 0)) {
zMap = new ZExpansion(expansionFactor);
zMap.setMinMax(zmin, zmax);
} else {
zMap = null;
}
}
/**
* Sets the autoscale flag and the floor and ceiling values.
*
* <p>If autoscaling is true, then the min and max values of z are set using the data. If
* autoscaling is false, then floor and ceiling values become the max and min. Values below min
* map to the first color; values above max map to the last color.
*
* @param isAutoscale
* @param floor
* @param ceil
*/
public void setAutoscaleZ(boolean isAutoscale, double floor, double ceil) {
autoscaleZ = isAutoscale;
if (autoscaleZ) {
update();
} else {
zmax = ceil;
zmin = floor;
if (zMap != null) {
zMap.setMinMax(zmin, zmax);
}
colorMap.setScale(zmin, zmax);
}
}
/** Updates the internal data by interpolating large grids onto a smaller array. */
void updateInterpolated(GridData griddata) {
if (autoscaleZ) {
double[] minmax = griddata.getZRange(ampIndex);
zmax = minmax[1];
zmin = minmax[0];
if (zMap != null) {
zMap.setMinMax(zmin, zmax);
}
colorMap.setScale(zmin, zmax);
}
double x = griddata.getLeft(), dx = (griddata.getRight() - griddata.getLeft()) / (nx - 1);
double y = griddata.getTop(), dy = -(griddata.getTop() - griddata.getBottom()) / (ny - 1);
for (int i = 0; i < nx; i++) {
y = griddata.getTop();
for (int j = 0; j < ny; j++) {
internalData[i][j] = griddata.interpolate(x, y, ampIndex);
if (zMap != null) {
internalData[i][j] = zMap.evaluate(internalData[i][j]);
}
y += dy;
}
x += dx;
}
}